Re: [PATCH 2/2] arm64: dts: qcom: sm8250: fix display nodes

[Jonathan Marek <jonathan@xxxxxxxx>]

On 2/11/21 3:05 PM, Dmitry Baryshkov wrote:
> On Thu, 11 Feb 2021 at 21:11, Jonathan Marek <jonathan@xxxxxxxx> wrote:
> > Apply these fixes to the newly added sm8250 display ndoes
> >   - Use sm8250 compatibles instead of sdm845 compatibles
> >   - Remove "notused" interconnect (which apparently was blindly copied from
> >     my old patches)
> >   - Use dispcc node example from dt-bindings, removing clocks which aren't
> >     documented or used by the driver and fixing the region size.
> >
> > Note: also removed the mmcx-supply for dispcc which wasn't documented when
> > it was added. I would have left it there but it is also breaking my
> > use-case (setting a lower power level than what the bootloader sets?).
>
> In our use case dispcc does not work w/o mmcx-supply. Compare this
> with the downstream kernel, which actively uses MMCX domain.

I sent a v2/v3 leaving the mmcx-supply untouched (I can fix my problem 
by using rpmhpd_opp_nom in the mmcx-supply instead, so its not a problem 
with adding it to dispcc). But mmcx-supply still needs to be added to 
documentation.

> > Fixes: 7c1dffd471b1 ("arm64: dts: qcom: sm8250.dtsi: add display system nodes")
> > Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
> > ---
> >   arch/arm64/boot/dts/qcom/sm8250.dtsi | 34 ++++++++--------------------
> >   1 file changed, 9 insertions(+), 25 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> > index 947e1accae3a..20a3ff30e924 100644
> > --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> > @@ -2323,14 +2323,13 @@ usb_2_dwc3: dwc3@a800000 {
> >                  };
> >
> >                  mdss: mdss@ae00000 {
> > -                       compatible = "qcom,sdm845-mdss";
> > +                       compatible = "qcom,sm8250-mdss";
> >                          reg = <0 0x0ae00000 0 0x1000>;
> >                          reg-names = "mdss";
> >
> > -                       interconnects = <&gem_noc MASTER_AMPSS_M0 &config_noc SLAVE_DISPLAY_CFG>,
> > -                                       <&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
> > +                       interconnects = <&mmss_noc MASTER_MDP_PORT0 &mc_virt SLAVE_EBI_CH0>,
> >                                          <&mmss_noc MASTER_MDP_PORT1 &mc_virt SLAVE_EBI_CH0>;
> > -                       interconnect-names = "notused", "mdp0-mem", "mdp1-mem";
> > +                       interconnect-names = "mdp0-mem", "mdp1-mem";
> >
> >                          power-domains = <&dispcc MDSS_GDSC>;
> >
> > @@ -2356,7 +2355,7 @@ mdss: mdss@ae00000 {
> >                          ranges;
> >
> >                          mdss_mdp: mdp@ae01000 {
> > -                               compatible = "qcom,sdm845-dpu";
> > +                               compatible = "qcom,sm8250-dpu";
> >                                  reg = <0 0x0ae01000 0 0x8f000>,
> >                                        <0 0x0aeb0000 0 0x2008>;
> >                                  reg-names = "mdp", "vbif";
> > @@ -2580,36 +2579,21 @@ opp-358000000 {
> >
> >                  dispcc: clock-controller@af00000 {
> >                          compatible = "qcom,sm8250-dispcc";
> > -                       reg = <0 0x0af00000 0 0x20000>;
> > -                       mmcx-supply = <&mmcx_reg>;
> > +                       reg = <0 0x0af00000 0 0x10000>;
> >                          clocks = <&rpmhcc RPMH_CXO_CLK>,
> >                                   <&dsi0_phy 0>,
> >                                   <&dsi0_phy 1>,
> >                                   <&dsi1_phy 0>,
> >                                   <&dsi1_phy 1>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <0>,
> > -                                <&sleep_clk>;
> > +                                <&dp_phy 0>,
> > +                                <&dp_phy 1>;
>
> There is no dp_phy on sm8250 yet.
>
> >                          clock-names = "bi_tcxo",
> >                                        "dsi0_phy_pll_out_byteclk",
> >                                        "dsi0_phy_pll_out_dsiclk",
> >                                        "dsi1_phy_pll_out_byteclk",
> >                                        "dsi1_phy_pll_out_dsiclk",
> > -                                     "dp_link_clk_divsel_ten",
> > -                                     "dp_vco_divided_clk_src_mux",
> > -                                     "dptx1_phy_pll_link_clk",
> > -                                     "dptx1_phy_pll_vco_div_clk",
> > -                                     "dptx2_phy_pll_link_clk",
> > -                                     "dptx2_phy_pll_vco_div_clk",
> > -                                     "edp_phy_pll_link_clk",
> > -                                     "edp_phy_pll_vco_div_clk",
> > -                                     "sleep_clk";
> > +                                     "dp_phy_pll_link_clk",
> > +                                     "dp_phy_pll_vco_div_clk";
> >                          #clock-cells = <1>;
> >                          #reset-cells = <1>;
> >                          #power-domain-cells = <1>;